FUJITSU MHR2030AT - Manual (Page 70)

Theory of Device Operation
4-18 C141-E145-02EN
Figure 4.8 Physical sector servo configuration on disk surface
W/R Recovery
Servo Mark
Gray Code W/R Recovery
Servo Mark
Gray Code W/R Recovery
Servo Mark
Gray Code
Erase Servo A Erase Servo A
Servo B Erase Servo B Erase
Servo C Erase Servo C
Erase Servo D Erase
PAD
CYLn + 1 CYLn CYLn – 1 (n: even number)
ÕÖ
Diameter
direction
Ш
Ш
Circumference
Direction
Erase: DC erase
area
OGB
Data area IGB
expand
Servo frame
(120 servo frames per revolution)